Component Function Check

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM-ENGINE CONTROL SYSTEM- ".

1. INSPECTION START

   Turn ignition switch OFF, and restart engine.

   Does the engine start? 

   YES-1 >> With CONSULT-III: GO TO 2.

   YES-2 >> Without CONSULT-III: GO TO  3.

   NO >> Go to "DIAGNOSIS PROCEDURE ".

2. CHECK IGNITION SIGNAL FUNCTION

   With CONSULT-III 

   1. Perform "POWER BALANCE" in "ACTIVE TEST" mode with CONSULT-III.
   2. Check that each circuit produces a momentary engine speed drop.

      Is the inspection result normal? 

      YES >> INSPECTION END

      NO >> Go to "DIAGNOSIS PROCEDURE ".

3. CHECK IGNITION SIGNAL FUNCTION

   Without CONSULT-III 

   1. Let engine idle.
   2. Read the voltage signal between ECM harness connectors.
      VOLTAGE REFERENCE CHART
      
      

      ECM				Voltage signal
      +		-
      Connector	Terminal	Connector	Terminal
      F14	9	E10	112	Courtesy of NISSAN MOTOR CO., U.S.A.
      	10
      	11
      	18
      	19
      	21

      Fig 1: Checking Voltage Signal Between ECM Harness Connectors

      Courtesy of NISSAN MOTOR CO., U.S.A.
      NOTE: The pulse cycle changes depending on RPM at idle.

      Is the inspection result normal? 

      YES >> INSPECTION END

      NO >> Go to "DIAGNOSIS PROCEDURE ".